CVE Published: 04/09/2024 |
CVE Updated: 05/11/2024 |
CVE Year: 2024 Source: Linux |
Vendor: Linux |
Product: Linux Status : PUBLISHED
CVE-2024-44955 Description
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Don\'t refer to dc_sink in is_dsc_need_re_compute
[Why]
When unplug one of monitors connected after mst hub, encounter null pointer dereference.
It\'s due to dc_sink get released immediately in early_unregister() or detect_ctx(). When
commit new state which directly referring to info stored in dc_sink will cause null pointer
dereference.
[how]
Remove redundant checking condition. Relevant condition should already be covered by checking
if dsc_aux is null or not. Also reset dsc_aux to NULL when the connector is disconnected.